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Huge coral reefs can stretch across oceans for miles But take a closer look, and you'll see that each coral is actually a tiny, simple animal. Discover how both hard and soft corals build colonies. Then learn about the threats to corals and their reefs and how people can protect... Read Full Overview

Huge coral reefs can stretch across oceans for miles But take a closer look, and you'll see that each coral is actually a tiny, simple animal. Discover how both hard and soft corals build colonies. Then learn about the threats to corals and their reefs and how people can protect... Read Full Overview